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  <title>建立起始命名空间声明处理器</title>

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</div><hr /><div id="function.xml-set-start-namespace-decl-handler" class="refentry">
   <div class="refnamediv">
    <h1 class="refname">xml_set_start_namespace_decl_handler</h1>
    <p class="verinfo">(PHP 4 &gt;= 4.0.5, PHP 5)</p><p class="refpurpose"><span class="refname">xml_set_start_namespace_decl_handler</span> &mdash; <span class="dc-title">
     建立起始命名空间声明处理器
    </span></p>

   </div>
 
 <div class="refsect1 description" id="refsect1-function.xml-set-start-namespace-decl-handler-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="type">bool</span> <span class="methodname"><strong>xml_set_start_namespace_decl_handler</strong></span>
    ( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$parser</code></span>
   , <span class="methodparam"><span class="type"><a href="language.types.callable.html" class="type callable">callable</a></span> <code class="parameter">$handler</code></span>
   )</div>

  <p class="para rdfs-comment">
   Set a handler to be called when a namespace is declared. Namespace
   declarations occur inside start tags. But the namespace declaration start
   handler is called before the start tag handler for each namespace declared
   in that start tag.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.xml-set-start-namespace-decl-handler-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<em><code class="parameter">parser</code></em></dt>

     <dd>

      <p class="para">
       A reference to the XML parser.
      </p>
     </dd>

    
    
     <dt>
<em><code class="parameter">handler</code></em></dt>

     <dd>

      <p class="para">
       <em><code class="parameter">handler</code></em> is a string containing the name of a
       function that must exist when <span class="function"><a href="function.xml-parse.html" class="function">xml_parse()</a></span> is called
       for <em><code class="parameter">parser</code></em>.
      </p>
      <p class="para">
       The function named by <em><code class="parameter">handler</code></em> must accept
       three parameters, and should return an integer value. If the
       value returned from the handler is <strong><code>FALSE</code></strong> (which it will be if no
       value is returned), the XML parser will stop parsing and
       <span class="function"><a href="function.xml-get-error-code.html" class="function">xml_get_error_code()</a></span> will return
       <strong><code>XML_ERROR_EXTERNAL_ENTITY_HANDLING</code></strong>.
       <div class="methodsynopsis dc-description">
        <span class="methodname"><span class="replaceable">handler</span></span>
         ( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$parser</code></span>
        , <span class="methodparam"><span class="type">string</span> <code class="parameter">$prefix</code></span>
        , <span class="methodparam"><span class="type">string</span> <code class="parameter">$uri</code></span>
        )</div>

       <dl>

        
         <dt>
<em><code class="parameter">parser</code></em></dt>

         <dd>

          <span class="simpara">
           The first parameter, <span class="replaceable">parser</span>, is a
           reference to the XML parser calling the handler.
          </span>
         </dd>

        
        
         <dt>
<em><code class="parameter">prefix</code></em></dt>

         <dd>

          <span class="simpara">
           The prefix is a string used to reference the namespace within an XML object.
          </span>
         </dd>

        
        
         <dt>
<em><code class="parameter">uri</code></em></dt>

         <dd>

          <span class="simpara">
           Uniform Resource Identifier (URI) of namespace.
          </span>
         </dd>

        
       </dl>

      </p>
      <p class="para">
       If a handler function is set to an empty string, or <strong><code>FALSE</code></strong>, the handler
       in question is disabled.
      </p>
      <blockquote class="note"><p><strong class="note">Note</strong>: <span class="simpara">除了函数名，含有对象引用的数组和方法名也可以作为参数。</span></p></blockquote>
     </dd>

    
   </dl>

  </p>
 </div>

 <div class="refsect1 returnvalues" id="refsect1-function.xml-set-start-namespace-decl-handler-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   成功时返回 <strong><code>TRUE</code></strong>， 或者在失败时返回 <strong><code>FALSE</code></strong>。
  </p>
 </div>

 <div class="refsect1 seealso" id="refsect1-function.xml-set-start-namespace-decl-handler-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="function.xml-set-end-namespace-decl-handler.html" class="function" rel="rdfs-seeAlso">xml_set_end_namespace_decl_handler()</a> - 建立终止命名空间声明处理器</span></li>
   </ul>
  </p>
 </div>

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